[test] Wrote class for testing UIntPtr buffer int list

Author: mta452

tehreer-android/src/androidTest/java/com/mta/tehreer/internal/collections/UIntPtrBufferIntListTest.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2018 Muhammad Tayyab Akram
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.mta.tehreer.internal.collections;
+
+import com.mta.tehreer.collections.IntListTestSuite;
+import com.mta.tehreer.internal.Memory;
+
+import org.junit.After;
+import org.junit.Before;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+
+public class UIntPtrBufferIntListTest extends IntListTestSuite {
+    private long pointer;
+
+    private void setUpInts() {
+        int[] sample = new int[] {
+            0x00000000, 0x0E38E38E, 0x1C71C71C, 0x2AAAAAAA, 0x38E38E38,
+            0x471C71C6, 0x55555554, 0x638E38E2, 0x71C71C70, 0x7FFFFFFE
+        };
+        int capacity = sample.length * 4;
+
+        this.pointer = Memory.allocate(capacity);
+        this.expected = sample;
+        this.actual = new UIntPtrBufferIntList(null, pointer, sample.length);
+
+        ByteBuffer byteBuffer = Memory.buffer(pointer, capacity).order(ByteOrder.nativeOrder());
+        IntBuffer intBuffer = byteBuffer.asIntBuffer();
+        intBuffer.put(sample);
+    }
+
+    private void setUpLongs() {
+        long[] sample = new long[] {
+            0x00000000, 0x0E38E38E, 0x1C71C71C, 0x2AAAAAAA, 0x38E38E38,
+            0x471C71C6, 0x55555554, 0x638E38E2, 0x71C71C70, 0x7FFFFFFE
+        };
+        int capacity = sample.length * 8;
+
+        this.pointer = Memory.allocate(capacity);
+        this.expected = new int[] { 0x00000000, 0x0E38E38E, 0x1C71C71C, 0x2AAAAAAA, 0x38E38E38,
+                                    0x471C71C6, 0x55555554, 0x638E38E2, 0x71C71C70, 0x7FFFFFFE };
+        this.actual = new UIntPtrBufferIntList(null, pointer, sample.length);
+
+        ByteBuffer byteBuffer = Memory.buffer(pointer, capacity).order(ByteOrder.nativeOrder());
+        LongBuffer longBuffer = byteBuffer.asLongBuffer();
+        longBuffer.put(sample);
+    }
+
+    @Before
+    public void setUp() {
+        switch (Memory.pointerSize()) {
+        case 4:
+            setUpInts();
+            break;
+
+        case 8:
+            setUpLongs();
+            break;
+
+        default:
+            throw new UnsupportedOperationException();
+        }
+    }
+
+    @After
+    public void tearDown() {
+        Memory.dispose(pointer);
+    }
+}